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Related Experiment Video

Updated: Nov 27, 2025

Home-Based Monitor for Gait and Activity Analysis

Home-Based Monitor for Gait and Activity Analysis

Published on: August 8, 2019

Fluid Intake Monitoring System Using a Wearable Inertial Sensor for Fluid Intake Management.

Hsiang-Yun Huang¹, Chia-Yeh Hsieh¹, Kai-Chun Liu²

¹Department of Biomedical Engineering, National Yang-Ming University, Taipei 112, Taiwan.

Sensors (Basel, Switzerland)

|December 3, 2020

Summary

This study introduces a wearable sensor system for monitoring fluid intake, improving hydration management. It accurately detects drinking and estimates intake, helping individuals maintain body fluid balance.

Keywords:

drinking activity recognition drinking amount estimation fluid intake monitoring wearable inertial sensor

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Area of Science:

Biomedical Engineering
Wearable Technology
Health Monitoring

Background:

Maintaining body fluid homeostasis is crucial for health.
Inadequate fluid intake can cause headaches, dizziness, and urolithiasis.
Busy lifestyles often lead to insufficient water consumption.

Purpose of the Study:

To develop a fluid intake monitoring system using wearable inertial sensors.
To detect drinking activities, recognize sip gestures, and estimate fluid intake amount.
To improve fluid intake management for better individual hydration behaviors.

Main Methods:

A hierarchical approach was employed to analyze data from wearable inertial sensors.
Drinking activities and sip gestures were detected and recognized.
Container-dependent models were developed to estimate fluid intake amount accurately.

Main Results:

The system achieved 94.42% accuracy for drinking detection and 90.17% sensitivity for gesture spotting.
Fluid intake amount estimation achieved a mean absolute percentage error (MAPE) of 40.11%.
MAPE for amount estimation was improved by approximately 10% compared to conventional methods.

Conclusions:

The proposed fluid intake monitoring system demonstrates feasibility and effectiveness.
Wearable sensor technology can significantly aid in managing daily fluid intake.
This system offers a promising solution for promoting adequate hydration and preventing related health issues.